import turtle as t
# def wujiaoxing(size):
#     size_three = size / 3
for i in range(5):
    t.pensize(3)
    for j in range(1,4):
        if j==2:
            t.penup()
            t.fd(0.618*100)
        if j%2==1:
            t.pendown()
            t.fd(100)
    t.right(720/5)
# print("请输入size的大小")
# size=int(input())
# wujiaoxing(size)
